Bug 1765651 - Put DOMNodeID in Accessible. r=morgan

Differential Revision: https://phabricator.services.mozilla.com/D144234

accessible/android/AccessibleWrap.cpp

@@ -645,12 +645,7 @@ int32_t AccessibleWrap::GetInputType(const nsString& aInputTypeAttr) {
 }
 
 void AccessibleWrap::WrapperDOMNodeID(nsString& aDOMNodeID) {
-  if (mContent) {
-    nsAtom* id = mContent->GetID();
-    if (id) {
-      id->ToString(aDOMNodeID);
-    }
-  }
+  DOMNodeID(aDOMNodeID);
 }
 
 bool AccessibleWrap::WrapperRangeInfo(double* aCurVal, double* aMinVal,

accessible/basetypes/Accessible.h

@@ -256,6 +256,11 @@ class Accessible {
    */
   virtual nsAtom* LandmarkRole() const;
 
+  /**
+   * Return the id of the dom node this accessible represents.
+   */
+  virtual void DOMNodeID(nsString& aID) const = 0;
+
   //////////////////////////////////////////////////////////////////////////////
   // ActionAccessible
 

accessible/generic/LocalAccessible.cpp

@@ -3516,6 +3516,15 @@ Maybe<float> LocalAccessible::Opacity() const {
   return Nothing();
 }
 
+void LocalAccessible::DOMNodeID(nsString& aID) const {
+  aID.Truncate();
+  if (mContent) {
+    if (nsAtom* id = mContent->GetID()) {
+      id->ToString(aID);
+    }
+  }
+}
+
 void LocalAccessible::StaticAsserts() const {
   static_assert(
       eLastStateFlag <= (1 << kStateFlagsBits) - 1,

accessible/generic/LocalAccessible.h

@@ -791,6 +791,8 @@ class LocalAccessible : public nsISupports, public Accessible {
 
   virtual Maybe<float> Opacity() const override;
 
+  virtual void DOMNodeID(nsString& aID) const override;
+
  protected:
   virtual ~LocalAccessible();
 

accessible/ipc/RemoteAccessibleBase.h

@@ -286,11 +286,7 @@ class RemoteAccessibleBase : public Accessible, public HyperTextAccessibleBase {
   virtual TableAccessibleBase* AsTableBase() override;
   virtual TableCellAccessibleBase* AsTableCellBase() override;
 
-  /**
-   * Return the id of the dom node this accessible represents.  Note this
-   * should probably only be used for testing.
-   */
-  virtual void DOMNodeID(nsString& aID) const;
+  virtual void DOMNodeID(nsString& aID) const override;
 
   // HyperTextAccessibleBase
   virtual already_AddRefed<AccAttributes> DefaultTextAttributes() override;

accessible/mac/mozAccessible.mm

@@ -741,13 +741,7 @@ struct RoleDescrComparator {
   MOZ_ASSERT(mGeckoAccessible);
 
   nsAutoString id;
-  if (LocalAccessible* acc = mGeckoAccessible->AsLocal()) {
-    if (acc->GetContent()) {
-      nsCoreUtils::GetID(acc->GetContent(), id);
-    }
-  } else {
-    mGeckoAccessible->AsRemote()->DOMNodeID(id);
-  }
+  mGeckoAccessible->DOMNodeID(id);
 
   return nsCocoaUtils::ToNSString(id);
 }